<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>01-引入方式</title>
  </head>
  <body>
    <!-- <button onclick="alert('哈哈哈')">点我</button> -->
    <!-- <button>点我</button> -->
    <button>点我</button>
  </body>
  <script src="./js/test.js"></script>
  <script>
    // document.querySelector("button").onclick = function () {
    //   alert("哈哈哈");
    // };
  </script>
</html>
